allow stories with the same link
atm, stories that use the same link are not allowed to be posted and a warning appears that the story has already been posted. however, sometimes different offers can use the same link (e.g. dominos coupons, tiger airways offers, etc). it will be good if the warning still appears (but it will say that an offer linked to that url has already been posted), along with links to the description of the previous offers from the same url. then the poster can check if their story has indeed been posted before; if not, they should have the option to post their story.
Thanks Mark, we have been thinking about this case a bit, and it is great to hear your feedback on it. I think you are correct, that is probably the best way to manage it. In the mean time, you can actually submit the same URL, just add a /?=randomtext at the end.